methyl 6-O-benzoyl-2,3,4-tri-O-benzyl-α-D-glucopyranosyl-(1→6)-2,3,4-tri-O-benzyl-α-D-glucopyranoside | 1301176-84-0

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: methyl 6-O-benzoyl-2,3,4-tri-O-benzyl-α-D-glucopyranosyl-(1→6)-2,3,4-tri-O-benzyl-α-D-glucopyranoside
• 英文别名: Bn(-2)[Bn(-3)][Bn(-4)][Bz(-6)]Glc(a1-6)[Bn(-2)][Bn(-3)][Bn(-4)]a-Glc1Me；[(2R,3R,4S,5R,6S)-6-[[(2R,3R,4S,5R,6S)-6-methoxy-3,4,5-tris(phenylmethoxy)oxan-2-yl]methoxy]-3,4,5-tris(phenylmethoxy)oxan-2-yl]methyl benzoate
• CAS: 1301176-84-0
• 化学式: C₆₂H₆₄O₁₂
• 分子量: 1001.18
• InChiKey: GZIRRXCMKHFZAR-GJQWJABHSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  9.7
• 重原子数：
  74
• 可旋转键数：
  26
• 环数：
  9.0
• sp3杂化的碳原子比例：
  0.31
• 拓扑面积：
  119
• 氢给体数：
  0
• 氢受体数：
  12

反应信息

• 作为产物：
  描述：

  p-methylphenyl 6-O-benzoyl-2,3,4-tri-O-benzyl-1-deoxy-1-thio-β-D-glucopyranoside 在 2,6-二甲基吡啶 、 N-甲酰吗啉 作用下， 以 二氯甲烷 为溶剂， 生成 methyl 6-O-benzoyl-2,3,4-tri-O-benzyl-α-D-glucopyranosyl-(1→6)-2,3,4-tri-O-benzyl-α-D-glucopyranoside
  参考文献：
  名称：

  基于原位加合物转化的灵活的1,2-顺式α-糖基化策略

  摘要：

  已经开发了一种针对多种糖基供体和受体的灵活的1,2-顺式α-选择性糖基化策略，该策略基于原位加合物转化方案。基于此策略，可以获取NFM衍生品和碘化物共价加合物进行糖基化。使用低温NMR光谱法，检测到上述糖基加合物。

  DOI：

  10.1039/c7ob00839b

文献信息

• Co 2 (CO) 6 -propargyl cation mediates glycosylation reaction by using thioglycoside
  作者：Meng-jie Xia、Wang Yao、Xiang-bao Meng、Qing-hua Lou、Zhong-jun Li

  DOI：10.1016/j.tetlet.2017.05.012

  日期：2017.6

  glycosylation reaction by activating the thioglycoside donor. The glyco-oxacarbenium cation was formed by transferring the thio-aglycone to the cobalt-propargyl cation that was generated from the cobalt-propargylated acceptor in situ via the activating with Lewis acid. The reactivity of the donor (Armed or dis-armed) and the amount of the Lewis acid control the releasing rate of the cobalt-propargyl group.

  我们发现钴-炔丙基阳离子可以通过激活硫糖苷供体来介导糖基化反应。糖-氧杂碳鎓阳离子是通过将硫代糖苷配基转移到钴-炔丙基阳离子上而形成的，该钴-炔丙基阳离子是通过用路易斯酸活化就地从钴-炔丙基化的受体生成的。供体的反应性（武装或解除武装）和路易斯酸的量控制着钴炔丙基的释放速率。
• Gold(III)-Catalyzed Glycosylation using Phenylpropiolate Glycosides: Phenylpropiolic Acid, An Easily Separable and Reusable Leaving Group
  作者：Mukta Shaw、Rima Thakur、Amit Kumar

  DOI：10.1021/acs.joc.8b02422

  日期：2019.1.18

  synthesized benchtop stable phenylpropiolate glycosyl (PPG) donors. Gold(III)-catalyzed activation of PPGs proceeds well with various carbohydrate and noncarbohydrate-based glycosyl acceptors and leads to their corresponding O/N-glycosides in good to excellent yields with regeneration of reusable and easily separable phenylpropiolic acid. Differentially protected PPGs reacted well under the optimized reaction

  使用新合成的台式稳定苯丙酸苯丙酯糖基（PPG）供体，开发了一种有效且操作简单的金（III）催化的糖基化方案。金（III）催化的PPG活化与各种基于碳水化合物和非碳水化合物的糖基受体进行得很好，并导致其相应的O / N-糖苷的收率好至极好，并具有可重复使用和易于分离的苯丙酸的再生。差异保护的PPG在优化的反应条件下反应良好。特别地，在甘露糖基和鼠李糖基PPG供体上观察到良好的异头选择性。初步的机理研究表明，与酯基相邻的三键的存在对于激活至关重要，并且基于PPG的供体显示出比类似的乙酸和苯甲酸酯供体更高的反应性。
• Halobenzoyl groups in glycosylation: effect on stereoselectivity and reactivity of glycosyl donors
  作者：S. Visansirikul、J. P. Yasomanee、A. V. Demchenko

  DOI：10.1007/s11172-015-0987-2

  日期：2015.5

  Described herein is the synthesis and evaluation of a series of glycosyl donors equipped with halobenzoyl substituents at O(4) and O(6) to study their properties in glycosylations. Among possible effects that may include carbonyl participation or H-bond mediated aglycone delivery, our results indicate that halobenzoyls act via a different mode.

  本文描述的是一系列在 O(4) 和 O(6) 处配备卤代苯甲酰基取代基的糖基供体的合成和评估，以研究它们在糖基化中的特性。在可能包括羰基参与或 H 键介导的苷元传递的可能影响中，我们的结果表明卤代苯甲酰基通过不同的模式起作用。
• Armed–disarmed effect of remote protecting groups on the glycosylation reaction of 2,3-dideoxyglycosyl donors
  作者：Satoshi Tomono、Shunichi Kusumi、Daisuke Takahashi、Kazunobu Toshima

  DOI：10.1016/j.tetlet.2011.02.109

  日期：2011.5

  The armed–disarmed effect of remote protecting groups at the C-4 and/or C-6 position(s) on the glycosylation reactions of 2,3-dideoxyglycosyl donors was investigated. It was found that under various glycosylation conditions, 4- or 6-O-Bn 2,3-dideoxyglycosyl donors were much more reactive than the corresponding 4,6-di-O-Bz 2,3-dideoxyglycosyl donors. Based on these results, an effective and chemoselective

  研究了C-4和/或C-6位置远程保护基团对2,3-二脱氧糖基供体的糖基化反应的解除武装作用。已经发现，各种糖基的条件下，4-或6- ö -Bn 2,3- dideoxyglycosyl捐助者比相应的4,6-二-更反应性ö -BZ 2,3- dideoxyglycosyl供体。基于这些结果，有效和化学选择性糖基化反应使用4,6-二- ö -Bn糖基乙酸酯和4-OH-6- ö -BZ糖基乙酸乙酯实现，产生良好产率的高2,3- dideoxydisaccharide α-立体选择性。
• Glycosidation of Thioglycosides in the Presence of Bromine: Mechanism, Reactivity, and Stereoselectivity
  作者：Sophon Kaeothip、Jagodige P. Yasomanee、Alexei V. Demchenko

  DOI：10.1021/jo2019174

  日期：2012.1.6

  Elaborating on previous studies by Lemieux for highly reactive "armed" bromides, we discovered that beta-bromide of the superdisarmed (2-O-benzyl-3,4,6-tri-O-benzoyl) series can be directly obtained from the thioglycoside precursor. When this bromide is glycosidated, alpha-glycosides form exclusively; however, the yields of such transformations may be low due to the competing anomerization into alpha-bromide that is totally unreactive under the established reaction conditions.